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Solving a JavaScript crackme: JS SAFE 2.0 (web) - Google CTF 2018

2018-06-28

[public] 454K views, 10.8K likes, 118 dislikes audio only

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Solving a crackme implemented in JavaScript that attempts to obfuscate the algorithm through some anti-debugging.

Solution Script / HTML: https://gist.github.com/LiveOverflow/bbdffe3777ce0f008b452e0a789cef65

John Hammond: https://www.youtube.com/user/RootOfTheNull

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Intro
/youtube/video/8yWUaqEcXr4?t=0
What is JS SAFE
/youtube/video/8yWUaqEcXr4?t=30
JS SAFE to HTML
/youtube/video/8yWUaqEcXr4?t=64
JS SAFE to String
/youtube/video/8yWUaqEcXr4?t=210
Dynamic Approach
/youtube/video/8yWUaqEcXr4?t=300
Rerun
/youtube/video/8yWUaqEcXr4?t=372
Extract source string
/youtube/video/8yWUaqEcXr4?t=441
Console log
/youtube/video/8yWUaqEcXr4?t=522
X decryption
/youtube/video/8yWUaqEcXr4?t=622
What is X
/youtube/video/8yWUaqEcXr4?t=649
How does X work
/youtube/video/8yWUaqEcXr4?t=692
What I dont understand
/youtube/video/8yWUaqEcXr4?t=722
Exit decryption
/youtube/video/8yWUaqEcXr4?t=798
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I’m moving, no videos sorry 17,541 views
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